Just a quick little note: My 10 years redsail old x700. For those of you who have this laser wheel wheels on the X axis. My 2nd laser has linear rails. I thought it would be nice if my x700 had linear rails also. I paid $22 on amazon. And it was a pretty simple straight forward upgrade. I only had to drill 4 holes in total to match the linear rails.
I just did it yesterday, but so far it's night and day. I have pushed my engraving speeds from 300mm sec to 700mm. I may try even faster. Also my general cuts are much smoother. So far it's likea whole new machine. Which is nice as it gets used everyday for my business.